Just a reminder to folks:

"Knowing" what is right, pure, Godly, biblical, holy, ethical, and moral - and faithfully and unfailingly adhering to those ideals are often two different things - whether someone has a relationship with their Lord and Savior or not. The infidelity and divorce rates inside the church and outside are virtually identical.

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Your "problem" isn't with the thoughts that prompt your question, your problem is your wife's poor (possibly non-existant) relationship with her Lord and Savior. THAT is where things needs to addressed first.

I'm not sure that is a very helpful thing to tell someone. Rdog has no control over his W's spiritual relationship. If he gets the impression that fixing his W's relationship to God is the only way he can save his marriage, then he may see this as a hopeless situation because that is not an actionable plan.

Relying on the strength of his own spiritual relationship for the grace, patience, and love needed to try to lead his W toward a healthier marriage (using MB principles and tools) might also lead her to a better spiritual relationship. This is an actionable plan.